Trolley impact test device and damper thereof

Abstract

The invention discloses a trolley impact test device and a damper thereof, the damper comprises a base, a first fastening piece, a moving piece, a second fastening piece and an adjusting piece, and the base extends along a first direction. And the first fastener is connected with the base. The moving part is movably connected with the base in the second direction. And the second fastening piece is connected with the moving piece. The adjusting piece is connected with the moving piece and the base and can adjust the position of the second fastening piece in an operable mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test devices, in particular to a trolley impact test device and a damper thereof. BACKGROUND

[0002] AEB braking (automatic emergency braking) refers to a system that actively brakes to avoid or mitigate a collision when the system determines that the vehicle is about to collide with a front target. The introduction of AEB is of great significance to improving road traffic safety, reducing accidents by 27% per year. However, while AEB reduces the speed of the vehicle, it will also change the movement posture of the occupant, such as the occupant's chest moving forward to shorten the distance between the steering wheel or instrument panel and the interior, the occupant's legs moving forward to change the relative relationship between the lower leg and the instrument panel and the foot pedal. Since the injury suffered by the occupant in the collision is closely related to the movement posture of the occupant, the optimization process of the passive safety restraint system is a process of adjusting the movement posture of the occupant in the collision. Therefore, in a frontal collision accident, when there is AEB action, the protection effect of the current restraint system will certainly change relative to the expected development.

[0003] For the above reasons, it is necessary to simulate the trolley deceleration process caused by AEB action to study the restraint state of the occupant in the presence of AEB process, but the prior art does not have a trolley deceleration test device that can simulate the AEB action. SUMMARY

[0004] The present application aims to provide a trolley impact test device and a damper thereof to solve the problems of the prior art.

[0005] To solve the above technical problems, an embodiment of the present application provides a damper for a trolley impact test, comprising: a base extending in a first direction; a first fastener connected to the base; a moving part movably connected to the base in a second direction; a second fastener connected to the moving part; an adjusting part connected to the moving part and the base and operable to adjust the position of the second fastener.

[0006] In one embodiment, the base comprises: a base plate extending in the first direction; a boss connected to the top surface of the base plate; the moving part is movably connected to the base plate; the adjusting part is connected to the boss and the moving part.

[0007] In one embodiment, the adjusting member is a bolt. The boss and the moving member are respectively provided with threaded holes arranged opposite to each other.

[0008] In one embodiment, the top surface of the bottom plate is provided with a first sliding groove extending along the second direction. The bottom of the moving member is located in the first sliding groove.

[0009] In one embodiment, at least two bosses are arranged side by side and spaced apart along the second direction. The damper further comprises a cover plate connected with the at least two bosses, and the bottom surface of the cover plate is spaced apart from the bottom plate by a preset distance. The cover plate is provided with a first avoiding groove avoiding the second fastener.

[0010] In one embodiment, the bottom surface of the cover plate is further provided with a second sliding groove. The top of the moving member is located in the second sliding groove.

[0011] In one embodiment, two bosses are arranged side by side and spaced apart along the second direction. The damper further comprises a cover plate connected with the two bosses, and the bottom surface of the cover plate is spaced apart from the bottom plate by a preset distance. The bottom surface of the cover plate is provided with a second sliding groove extending along the second direction and at least partially aligned with the first sliding groove vertically. The top of the moving member is located in the second sliding groove. The top wall of the second sliding groove is provided with a first avoiding groove penetrating through the cover plate, the first avoiding groove extending along the second direction for avoiding the second fastener.

[0012] In one embodiment, the moving member is provided with a through hole penetrating through the moving member along the first direction. The top surface of the moving member is provided with a pin hole penetrating through the through hole. The second fastener is a pin column connected with the pin hole.

[0013] In one embodiment, the first fastener is connected with the cover plate.

[0014] In one embodiment, the cover plate is provided with a pin hole. The first fastener is a pin column connected with the pin hole.

[0015] In one embodiment, the cover plate is provided with at least two pin holes arranged side by side along the first direction. At least two first fasteners are connected with at least two pin holes and the bottom plate respectively; The projection of the second fastener along the second direction is located between the projections of the at least two first fasteners along the second direction.

[0016] In one embodiment, the cover plate is provided with a plurality of pin holes, at least two pin holes are arranged side by side along the first direction, and at least another pin hole is arranged staggered along the first direction with the rest of the pin holes; A plurality of first fasteners are connected with a plurality of pin holes and the bottom plate respectively; The projection of the second fastener along the second direction is located between the projections of the plurality of first fasteners along the second direction.

[0017] In one embodiment, the bottom plate is provided with a second avoiding groove avoiding the second fastener, and the second avoiding groove extends along the second direction.

[0018] The present application also relates to a trolley impact test device, comprising: A track extending along the first direction; Two above-mentioned dampers, and two dampers are located on both sides of the track along the second direction; A reinforcing bar crossing the track, one end of the reinforcing bar is located between at least one first fastener and one second fastener of one of the dampers and is arranged in a bent manner, and the other end of the reinforcing bar is located between at least one first fastener and one second fastener of the other damper and is arranged in a bent manner; A trolley movably connected with the track.

[0019] The damper of the present application has simple structure, convenient operation and small space occupation, so that the deceleration trolley can conveniently reproduce the braking effect of AEB. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 And Figure 2 is a perspective view of the damper of one embodiment of the present application.

[0021] Figure 3 And Figure 4 is Figure 1 is a perspective view of the base in the embodiment shown.

[0022] Figure 5 is a perspective view of the moving part of one embodiment of the present application.

[0023] Figure 6 And Figure 7 is Figure 1 is a perspective view of the cover plate in the embodiment shown.

[0024] Figure 8 and Figure 9 is an exploded view of a trolley impact test device according to an embodiment of the present application.

[0025] Reference signs: 100, damper; 1, base; 11, bottom plate; 111, first sliding slot; 112, second pin hole; 113, second avoiding slot; 12, boss; 121, moving channel; 13, first threaded hole; 2, moving piece; 21, second threaded hole; 22, third pin hole; 23, through hole; 3, first fastener; 4, second fastener; 5, cover plate; 51, first pin hole; 52, first avoiding slot; 53, second sliding slot; 6, steel bar; 61, first section; 62, middle section; 63, tail section; 7, first column; 8, second column; 9, adjusting piece; 200, trolley impact test device. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the claims of the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments.

[0027] Unless otherwise required by context, the word "comprise" and variations of the word, such as "comprising" and "comprises", are not intended to exclude further additives, components, ingredients, or steps.

[0028] The embodiments of the present application will be described in detail below with reference to the drawings, so as to make the objects, characteristics and advantages of the present application clearer. It should be understood that the embodiments shown in the drawings are not a limitation on the scope of the present application, but are only used to illustrate the essential spirit of the technical solutions of the present application.

[0029] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. In addition, particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0030] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. It should be noted that the term "comprising" as used in this specification and the appended claims is used in the inclusive, open sense, i.e., the term "comprising" is used in the sense of "including but not limited to."

[0031] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0032] This invention relates to a damper 100 used in trolley impact tests. The damper 100 includes a base 1, a first fastener 3, a movable member 2, a second fastener 4, and an adjusting member 9. The base 1 extends along a first direction X, and the first fastener 3 is connected to the base 1. The movable member 2 is movably connected to the base 1 and is movable along a second direction Y. The second fastener 4 is connected to the movable member 2.

[0033] Adjusting component 9 is connected to moving component 2 and base 1. After moving component 2 moves, adjusting component 9 can fix moving component 2 and base 1.

[0034] The second fastener 4 can move with the movable part 2, clamping one end of the reinforcing bar 6 between the first fastener 3 and the second fastener 4. As the movable part 2 moves to the predetermined position, the reinforcing bar 6 is clamped, bent and fixed by the second fastener 4.

[0035] During the test, the base 1 of the damper 100 is fixed to the ground or a platform. One end of the reinforcing bar 6 is fixed to the damper 100, and the other end is fixed to another damper 100. The two dampers 100 are installed on both sides of the track along the second direction Y. The trolley impacts the reinforcing bar 6 along the track at a preset speed. When the trolley passes, the reinforcing bar 6 will generate an approximately constant deceleration resistance on the trolley. The magnitude of the resistance on the trolley can be adjusted by the number of reinforcing bars 6 placed. This damper 100 is inexpensive and easy to install, and can simulate the deceleration process of the trolley caused by AEB (Automatic Emergency Braking) to study the constraint state of the occupants during AEB.

[0036] Specifically, the base 1 includes a base plate 11 and a boss 12. In one specific embodiment, the base plate 11 is a rectangular plate extending along a first direction. The four corners of the base plate 11 are respectively provided with threaded holes. The base plate 11 can be connected to the ground or fixedly connected to a platform by bolts and the threaded holes on the base plate.

[0037] The boss 12 is located on one side of the base plate 11 along the second direction, and the boss 12 protrudes from the top surface of the base plate 11. The movable member 2 is on the top surface of the base plate 11 and can move along the second direction. When the boss 12 moves to a preset position, the adjusting member 9 can fix the boss 12 and the movable member 2.

[0038] In a preferred embodiment, the adjusting member 9 is threadedly connected to the boss 12 and the moving member 2. Specifically, as shown... Figure 3 and Figure 5 As shown, the boss 12 and the movable part 2 have threaded holes at their ends facing the boss 12. The threaded hole of the boss 12 is defined as the first threaded hole 13, and the threaded hole of the movable part 2 is defined as the second threaded hole 21. The adjusting part 9 is a bolt, which is threadedly connected to the first threaded hole 13 and the second threaded hole 21, respectively. After the reinforcing bar is inserted, the movable part 2 is moved and the reinforcing bar is bent. The adjusting part is then used to fix the movable part, thereby fixing the reinforcing bar on the damper.

[0039] Preferably, the top surface of the base plate 11 is provided with a first groove 111 extending along the second direction, the bottom of the moving member 2 is located in the first groove 111, and the middle part and the top are located on the top surface of the base plate 11. The first groove 111 can play a guiding role and can prevent the moving member 2 from tilting.

[0040] Preferably, the two protrusions 12 are arranged side by side at intervals along the second direction. Preferably, the two protrusions 12 are arranged at the same height. The top surface of the two protrusions 12 is covered with a cover plate 5, which is fixedly connected to the two protrusions 12 by bolts. Due to the supporting effect of the protrusions 12, the bottom surface of the cover plate 5 and the bottom plate 11 have a certain gap, which allows multiple reinforcing bars 6 to pass through.

[0041] The first fastener 3, the cover plate 5, and the base plate 11 are respectively fixedly connected. Preferably, the first fastener 3 is a pin. The cover plate 5 and the base plate 11 are respectively provided with pin holes for fixing the first fastener 3. The pin hole of the cover plate 5 is defined as the first pin hole 51, and the pin hole of the base plate 11 is defined as the second pin hole 112.

[0042] The cover plate 5 is provided with a first clearance groove 52 to avoid the second fastener 4. The first clearance groove 52 extends along the second direction, so that the second fastener 4 can move in the second direction within the first clearance groove 52.

[0043] Preferably, the bottom surface of the cover plate 5 is also provided with a second sliding groove 53. The second sliding groove 53 extends along the second direction. At least a part of the second sliding groove 53 is aligned with the first sliding groove 111 in the vertical direction. The top of the moving part 2 is located in the second sliding groove 53, the bottom is located in the first sliding groove 111, and the middle part is located in the gap area between the cover plate 5 and the bottom plate 11. The cooperation between the second sliding groove 53 and the first sliding groove 111 makes the moving part 2 more stable.

[0044] The first clearance groove 52 is formed by recessing the top surface of the second slide groove 53 into the top wall of the moving part 2, and the second fastener can move within the first clearance groove 52.

[0045] Of course, the first slide groove 111 may not be provided on the base plate 11, but only the second slide groove 53 may be provided on the cover plate 5. The bottom end of the moving part 2 is located on the top surface of the base plate 11, and the top end is located in the second slide groove 53, moving along the second slide groove 53.

[0046] exist Figure 3 In the embodiment shown, since the two protrusions 12 have a certain width, the distance between the two protrusions 12 is small. In order to avoid restricting the movement space of the moving part 2 and increase stability, a moving channel 121 is also opened on the side of the two protrusions 12 facing each other. The moving channel 121 is connected to the first slide groove 111 of the bottom plate 11 and the second slide groove 53 of the top plate, so as to facilitate the moving part 2 to move along the second direction.

[0047] The movable component 2 has a through hole 23 on one side along the first direction, and the through hole 23 penetrates the movable component 2 along the first direction. The top surface of the movable component 2 has a pin hole, defined as the third pin hole 22, which penetrates the movable component 2 vertically. The middle portion of the third pin hole 22 is located within the through hole 23, meaning that the third pin hole 22 passes through the through hole 23. The second fastener 4 is a pin connected to the third pin hole 22, and the second fastener 4 passes through the through hole 23.

[0048] As a preferred embodiment, the cover plate 5 is provided with two first pin holes 51, which are arranged side by side along a first direction. The two first fasteners 3 are respectively connected to at least two first pin holes 51 and two second pin holes 112 of the base plate 11.

[0049] The second fastener 4 is located between the two first pin holes 51, and after the second fastener 4 is fixed along the moving part, it is offset from the two first pin holes 51 along the first direction. That is, the projection of the second fastener 4 along the second direction is located between the projections of the two first fasteners 3 along the second direction.

[0050] The reinforcing bar 6 passes between one of the first fasteners 3 and the second fastener 4, and between the other first fastener 3 and the second fastener 4. The reinforcing bar 6 is V-shaped and partially fitted outside the second fastener 4, and is locked by the two first fasteners 3.

[0051] Preferably, such as Figure 1 and Figure 8 As shown, the cover plate 5 is provided with three first pin holes 51, and the bottom plate 11 is provided with three second pin holes 112 respectively aligned with the three first pin holes. The three first fasteners 3 are respectively fixedly connected to the three first pin holes 51 and the three second pin holes 112.

[0052] Of the three first fasteners 3, two of them are arranged side by side along the first direction. After the second fastener is fixed, the remaining first fastener 3 and the second fastener 4 are arranged basically side by side or slightly offset along the first direction. That is to say, the reinforcing bar 6 is arranged in a Z-shape between the three first fasteners 3 and the second fastener 4, and is fixed by the three first fasteners 3 and the second fastener 4.

[0053] Optionally, the cover plate 5 may have multiple first pin holes 51, with at least two first pin holes 51 arranged side by side along the first direction, and at least one first pin hole 51 offset from the remaining first pin holes 51 along the first direction and aligned with the second fastener 4 along the first direction, or they may be offset. The multiple first fasteners 3 are respectively connected to the multiple first pin holes 51 and the multiple second pin holes 112 of the base plate 11.

[0054] The projection of the second fastener 4 along the second direction is located between the projections of the multiple first fasteners 3 along the second direction, and the reinforcing bar 6 can be fixed in a Z-shaped bend.

[0055] The base plate 11 is provided with a second clearance groove 113 to avoid the bottom of the second fastener 4. The second clearance groove 113 extends along the second direction, and the bottom of the second fastener 4 can move along the second direction within the second clearance groove 113.

[0056] The present invention also relates to a bogie impact testing device 200, such as... Figure 8 and Figure 9 As shown, the trolley impact test device 200 includes the aforementioned guide rail, steel bar 6, trolley moving along the guide rail, and two dampers 100.

[0057] The track is fixed to the bottom surface and extends along the first direction. Two dampers 100 are located on both sides of the guide rail along the second direction, and the two dampers 100 are arranged side by side along the second direction.

[0058] The reinforcing bar 6 includes a first section 61, a middle section 62, and a last section 63. The middle section 62 crosses the track and its two ends are connected to the front ends of the first section 61 and the last section 63, respectively.

[0059] The rear end of the first segment 61 is located between three first fasteners 3 and one second fastener 4 in one of the dampers 100 and is bent, thereby being fixed by the damper 100. The rear end of the tail segment 63 is located between three first fasteners 3 and one second fastener 4 in another damper 100 and is bent, and is fixed by the damper 100.

[0060] The trolley is movably connected to the track. The trolley moves from back to front along the first direction and hits the steel bar 6. The trolley can generate a deceleration of about 7 m / s2, which is the deceleration after emergency braking.

[0061] In use, first fix the base 1 to the ground, install the movable part 2 in the first slide groove 111, and fix the cover plate 5 on the two protrusions 12. The two first fasteners are aligned along the first direction to form the first column 7. Move the second fastener to align it with another first fastener along the first direction to form the second column 8. There is a channel extending along the first direction between the first column 7 and the second column 8; that is, the rear end of the first segment 61 of the reinforcing bar 6 is inserted into the channel between the first column 7 and the second column 8. Then move the second fastener so that the rear end of the first segment 61 is bent and fixed. The fixing method of the tail segment 63 is the same as that of the first segment 61, and will not be described again.

[0062] The damper 100 of the present invention has a reinforcing bar 6 passing between the cover plate 5 and the pin inserted in the movable member 2. The inserted reinforcing bar 6 can deform as the second fastener 4 on the movable member 2 moves laterally.

[0063] The damper 100 of the present invention has a simple structure, is easy to operate, and occupies little space, making it easy for the deceleration trolley to reproduce the braking effect of AEB.

[0064] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0065] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0066] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A damper for trolley impact test, characterized by, The damper comprises: a base extending along a first direction; a first fastener connected with the base; a moving member movably connected with the base along a second direction; a second fastener connected with the moving member; an adjusting member connected with the moving member and the base and operable to adjust the position of the second fastener.

2. The damper of claim 1, wherein The base comprises: a base plate extending along the first direction; a boss connected to the top surface of the base plate; the moving member is movably connected with the base plate; the adjusting member is connected with the boss and the moving member.

3. The damper of claim 2, wherein The adjusting member is a bolt; the boss and the moving member are respectively provided with threaded holes arranged opposite to each other.

4. The damper of claim 2, wherein The top surface of the base plate is provided with a first sliding groove extending along the second direction; the bottom of the moving member is located in the first sliding groove.

5. The damper of claim 2, wherein, At least two bosses are arranged side by side and spaced apart along the second direction; the damper further comprises a cover plate connected with the at least two bosses and the bottom surface of the cover plate is spaced apart from the base plate by a preset distance; the cover plate is provided with a first avoiding groove for avoiding the second fastener.

6. The damper of claim 5, wherein, The bottom surface of the cover plate is further provided with a second sliding groove; the top of the moving member is located in the second sliding groove.

7. The damper of claim 4, wherein, Two bosses are arranged side by side and spaced apart along the second direction; the damper further comprises a cover plate connected with the two bosses and the bottom surface of the cover plate is spaced apart from the base plate by a preset distance; the bottom surface of the cover plate is provided with a second sliding groove extending along the second direction and at least a part of the second sliding groove is aligned with the first sliding groove vertically; the top of the moving member is located in the second sliding groove; the top wall of the second sliding groove is provided with a first avoiding groove penetrating through the cover plate, the first avoiding groove extending along the second direction for avoiding the second fastener.

8. The damper of claim 7, wherein, The moving member is provided with a through hole penetrating through the moving member along the first direction; the top surface of the moving member is provided with a pin hole penetrating through the through hole; the second fastener is a pin column connected with the pin hole.

9. The damper of claim 7, wherein, The first fastener is connected with the cover plate.

10. The damper of claim 7, wherein, The cover plate is provided with a pin hole; the first fastener is a pin column connected with the pin hole.

11. The damper of claim 10, wherein, The cover plate is provided with at least two pin holes arranged side by side along the first direction; at least two first fasteners are respectively connected with at least two pin holes and the base plate; the projection of the second fastener along the second direction is located between the projections of at least two first fasteners along the second direction.

12. The damper of claim 10, wherein, The cover plate is provided with a plurality of pin holes, at least two pin holes arranged side by side along the first direction, and at least another pin hole is arranged staggered with the rest of the pin holes along the first direction; a plurality of first fasteners are respectively connected with a plurality of pin holes and the base plate; the projection of the second fastener along the second direction is located between the projections of a plurality of first fasteners along the second direction.

13. The damper of claim 5, wherein, The base plate is provided with a second avoiding groove for avoiding the second fastener, the second avoiding groove extending along the second direction.

14. A trolley impact test device characterized by, The damper comprises: a track extending along the first direction; two dampers according to claim 1, the two dampers being located on both sides of the track along the second direction; a steel bar, the steel bar being arranged across the track, one end of the steel bar being arranged between at least one first fastener and one second fastener of one of the dampers and being bent, the other end of the steel bar being arranged between at least one first fastener and one second fastener of the other damper and being bent; a trolley, the trolley being movably connected with the track.

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